bmesh_mesh_normals.hh

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once

 
#include "BLI_math_vector_types.hh"
#include "BLI_span.hh"
 
#include "bmesh_class.hh"
 
struct BMPartialUpdate;
 
struct BMeshNormalsUpdate_Params {
  bool face_normals;
};

void BM_mesh_normals_update_ex(BMesh *bm, const BMeshNormalsUpdate_Params *param);
void BM_mesh_normals_update(BMesh *bm);
void BM_mesh_normals_update_with_partial_ex(BMesh *bm,
                                            const BMPartialUpdate *bmpinfo,
                                            const BMeshNormalsUpdate_Params *param);
void BM_mesh_normals_update_with_partial(BMesh *bm, const BMPartialUpdate *bmpinfo);

void BM_verts_calc_normal_vcos(BMesh *bm,
                               blender::Span<blender::float3> fnos,
                               blender::Span<blender::float3> vcos,
                               blender::MutableSpan<blender::float3> vnos);
void BM_loops_calc_normal_vcos(BMesh *bm,
                               blender::Span<blender::float3> vcos,
                               blender::Span<blender::float3> vnos,
                               blender::Span<blender::float3> fnos,
                               bool use_split_normals,
                               blender::MutableSpan<blender::float3> r_lnos,
                               MLoopNorSpaceArray *r_lnors_spacearr,
                               short (*clnors_data)[2],
                               int cd_loop_clnors_offset,
                               bool do_rebuild);

bool BM_loop_check_cyclic_smooth_fan(BMLoop *l_curr);
void BM_lnorspacearr_store(BMesh *bm, blender::MutableSpan<blender::float3> r_lnors);
void BM_lnorspace_invalidate(BMesh *bm, bool do_invalidate_all);
void BM_lnorspace_rebuild(BMesh *bm, bool preserve_clnor);
void BM_lnorspace_update(BMesh *bm);
void BM_normals_loops_edges_tag(BMesh *bm, bool do_edges);
#ifndef NDEBUG
void BM_lnorspace_err(BMesh *bm);
#endif
 
/* Loop Generics */

BMLoopNorEditDataArray *BM_loop_normal_editdata_array_init_with_htype(BMesh *bm,
                                                                      bool do_all_loops_of_vert,
                                                                      char htype_override);
BMLoopNorEditDataArray *BM_loop_normal_editdata_array_init(BMesh *bm, bool do_all_loops_of_vert);
void BM_loop_normal_editdata_array_free(BMLoopNorEditDataArray *lnors_ed_arr);

bool BM_custom_loop_normals_to_vector_layer(BMesh *bm);
void BM_custom_loop_normals_from_vector_layer(BMesh *bm, bool add_sharp_edges);

void BM_edges_sharp_from_angle_set(BMesh *bm, float split_angle);